Ext.define('AM.store.Tasks', {
			extend : 'Ext.data.Store',
			model : 'AM.model.Task',
			groupers : [{
						property : 'due',
						// Use the group string here so we don't need to worry
						// about time
						// during any grouping based comparisons
						getGroupString : function(rec) {
							return Ext.Date.format(rec.get('due'), 'Y-m-d');
						}
					}]
		});